Cleaning brush



April 7, l1964 YosHlYuKl KATsuMURA 3,127,627

CLEANING BRUSH Filed June 8, 1962 IN VEN TOR.

YDS/Hyun K fas/WM United States Patent O 3,127,627 CLEANING BRUSH Yoshiyulri Katsnmura, 53 S-chome, Uehommachi, Tennoii-lru, (Esatta, Japan Filled llune 8, 1962, Ser. No. 201,181 2 Claims. (Cl. 15-27) This invention relates to a cleaning brush, more particularly to a brush for cleaning bodies of cars.

Heretofore, brushes of this sort, made mainly of feathers, have tended only to sweep dust away from the surface of the body of a car, and inevitably it has been necessary to use some other cluster for burnishing it.

An object of the present invention is to provide a brush with which to sweep dust away from the surface of the body of a car, :and inevitably it has been necessary to use some other duster for burnishing it.

An object of the present invention is to provide a brush with which to sweep dust away from the surface of the body of a car and at the same time to burnish it.

Another object of the present invention is to provide a brush which is more durable than brushes of the prior art.

With these objects in view, the present invention provides a brush in which wire material of a certain length is bent into `a rod consisting of a pair of parallel parts and a U-shaped part connecting them. An elastic pipe of rubber, synthetic resin or the like is rotatably mounted on each of these parallel parts and a pipe of the same material is fixed on the U-shaped part. Cloth, having a deep pile in which the pile fibers forming the bristles of the brush are of chemical fiber, is tightly secured around each pipe, thus providing a pair of rotatable cylindrical brushes and a fixed head brush, the bristles on these rotatable brushes touching each other.

According to the present invention, a pair of cylindrical brushes, when applied to and moved along the surface of the body of a car, are set in rotation, but their bristles scrub each other as they move in opposite directions and their rotations are checked in some degree, so that they perform both rotating and sliding motions in relation to the surface of the body, taking away dust on the surface by the rotating motion and burnishing the surface by the sliding motion. Accordingly, the dust is effectively fiipped away lby the bristles recoiling from their contact with each other, and static electricity generated in the bristles by the contact with each other greatly facilitates the work of taking away dust. A fixed head brush is very convenient for cleaning narrow recesses of the body. Besides, because the brushes are on an elastic pipe, they will bend in conformity to the various curves of the body, which is a great advantage in cleaning and burnishing complicated curved surfaces.

Other and the further objects of the present invention will become apparent from the following specification and claims taken together with the accompanying drawings in which is shown the preferred embodiment of the brush for cleaning and burnishing the bodies of cars according to the present invention.

FIG. l is a plan view, partly in axial section, of a brush embodying the present invention, and

FIG. 2 is an end view of the brush of FIG. l.

In these drawings numerals 11, 11 indicate a pair of parallel rods, the ends of which are connected to each other by a U-shaped rod `12. The three rods can be made by bending a wire of metal, synthetic resin or the like of relatively small cross-section. Numerals 13, 13 indicate pipes made of elastic rubber, synthetic resin or the like. Inside each end of each pipe 13 is mounted a supporting ring .1d rotatably mounted on a rod 11 so as to rotatably mount pipes 13 `on rods 11, and over the entire outer surface thereof is secured, for example by means of ICC a binding agent, cloth having a deep piled texture 16, the pile fibers 15 of which are mainly made of strong and flexible chemical fiber and form the bristles of the brush, and which are long enough to come in contact with the fibers forming the bristles on the other pipe 13. With pipes E13, t13 rotatably mounted on the rods 11, 11, there is thus provided a pair of rotatable cylindrical brushes 17, 17. On the U-shaped rod 12 is fixedly mounted a pipe 13, which is made of the same material as the pipes 13, y13 and which has cloth 2i? of the same material as the cloth 16 and having the same long piles 19 wound and secured thereon, to form a head brush 21. Between the parallel rods 11, 11 and the U-shaped rod 12, and between `the parallel rods 11, 11 and a handle 22 are positioned washers 23. The ends 2d of the rods 11, 11 are inserted into holes bored in the handle 22, and a nut 25 is threaded onto the adjacent ends of the parallel rods 11, 11 so as to fix them securely to the handle 22.

It is thought that the invention and its advantages will be understood from the foregoing description and it is apparent that various changes may he made in the forms, construction and arrangement of the parts without departing from the spirit and scope of the invention, the form hereinbefore described and illustrated in the drawings being merely a preferred embodiment thereof.

Having thus described my invention, what 1 claim and desire to secure by Letters Patent of the United States is:

1. A cleaning brush, comprising a pair of rotatable cylindrical brushes rotatable `about parallel axes of rotation and having radially projecting fibers forming the bristles of the brushes, and a fixed head brush curving from the end of one of said cylindrical brushes to the correspondinsy end of the other cylindrical brush and having fibers projecting therefrom `forming the bristles of the head brush, said parallel axes of rotation of said cylindrical brushes being spaced to cause the ends of the bristles on one cylindrical brush to contact the ends of the bristles on the other cylindrical brush, so that when the cleaning brush is moved across a surface, the cylindrical brushes rotate in the same direction and the touching bristles scrub each other as they move past each other in opposite directions, and the rotation of the cylindrical brushes is retarded by the touching of the bristles so that the cylindrical brushes perform both a rotational and a sliding movement relative to the surface.

2. A cleaning brush, comprising a pair of parallel axles and a U-shaped rod connecting the corresponding ends of said axles, a pair of cylindrical brushes rotatably mounted on said parallel axles and having radially projecting fibers forming the bristles of said brushes, and a head brush fixedly mounted on said U-shaped rod and having fibers projecting therefrom `forming Ithe bristles of the head brush, said parallel axles being spaced from each other so that the ends of the bristles on one cylindrical brush contact the ends of the bristles on the other cylindrical brush, so that when the cleaning brush is moved across a surface, the cylindrical brushes rotate in the same direction and the touching bristles scrub each other as they move past each other in opposite directions, and the rotation of the cylindrical brushes is retarded by the touching of the bristles so that the cylindrical brushes perform both a rotational and a sliding movement relative to the surface.

References Cited in the file of this patent UNITED STATES PATENTS 1,726,587 Rein Sept. 3, 1929 2,593,200 Sand Apr. l5, 1952 FOREIGN PATENTS 619,159 Canada Apr. 25, 1961 

1. A CLEANING BRUSH, COMPRISING A PAIR OF ROTATABLE CYLINDRICAL BRUSHES ROTATABLE ABOUT PARALLEL AXES OF ROTATION AND HAVING RADIALLY PROJECTING FIBERS FORMING THE BRISTLES OF THE BRUSHES, AND A FIXED HEAD BRUSH CURVING FROM THE END OF ONE OF SAID CYLINDRICAL BRUSHES TO THE CORRESPONDING END OF THE OTHER CYLINDRICAL BRUSH AND HAVING FIBERS PROJECTING THEREFROM FORMING THE BRISTLES OF THE HEAD BRUSH, SAID PARALLEL AXES OF ROTATION OF SAID CYLINDRICAL BRUSHES BEING SPACED TO CAUSE THE ENDS OF THE BRISTLES ON ONE CYLINDRICAL BRUSH TO CONTACT THE ENDS OF THE BRISTLES 